Pith Number

pith:E2NRGW6J

pith:2013:E2NRGW6JNLBLJJCDCH3T4JKRNB

not attested not anchored not stored refs pending

Polynomial time approximation schemes for the traveling repairman and other minimum latency problems

Ren\'e Sitters

arxiv:1307.4289 v3 · 2013-07-16 · cs.DS

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E2NRGW6JNLBLJJCDCH3T4JKRNB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:42:28.848033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

269b135bc96ac2b4a44311f73e255168721e8bc8bdc7451c35bddbeec4bfcccb

Aliases

arxiv: 1307.4289 · arxiv_version: 1307.4289v3 · doi: 10.48550/arxiv.1307.4289 · pith_short_12: E2NRGW6JNLBL · pith_short_16: E2NRGW6JNLBLJJCD · pith_short_8: E2NRGW6J

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/E2NRGW6JNLBLJJCDCH3T4JKRNB \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 269b135bc96ac2b4a44311f73e255168721e8bc8bdc7451c35bddbeec4bfcccb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ffe0c9c88f2eaccd04755ccb1d5f228276a6c46791f48250a7234e88625b9cc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-07-16T14:38:01Z",
    "title_canon_sha256": "9d9e56ec700361a6643abcfdce5b1a88f9647e791ae4e6ac3d13bb000084792c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.4289",
    "kind": "arxiv",
    "version": 3
  }
}